def ld_neg
import bend-collections-laws-crypto@1.0.0.0/src/math/f64.bend as F64import Base
860def ld_neg(+x: F64, +k: Nat, tiny: Bool) -> F64:
861 match tiny:
862 case True{}:
863 zero(signbit(x))
864 case False{}:
865 round_w(signbit(x), Nat.sub(dexp(x), k), dmant(x))